RFR: JDK-8273176: handle latest VS2019 in abstract_vm_version

[Matthias Baesken]

Please review this small change.
It handles latest  VS2019 versions  in abstract_vm_version, e.g. 16.10.
See the _MSC_VER documentation at  https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=msvc-160

Thanks, Matthias

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Commit messages:
 - JDK-8273176

Changes: https://git.openjdk.java.net/jdk/pull/5317/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5317&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273176
  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5317.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5317/head:pull/5317

PR: https://git.openjdk.java.net/jdk/pull/5317